Zacharias Topelius was a Finnish author, poet, journalist, historian, and rector of the University of Helsinki who wrote novels related to Finnish history.

Pearl Zane Grey was an American author and dentist. He is known for his popular adventure novels and stories associated with the Western genre in literature and the arts; he idealized the American frontier. Riders of the Purple Sage (1912) was his best-selling book.

Zhuang Zhou, commonly known as Zhuangzi, was an influential Chinese philosopher who lived around the 4th century BCE during the Warring States period, a period of great development in Chinese philosophy, the Hundred Schools of Thought. He is credited with writing—in part or in whole—a work known by his name, the Zhuangzi, which is one of the foundational texts of Taoism.

Zitkala-Ša was a Yankton Dakota writer, editor, translator, musician, educator, and political activist. She was also known by her Anglicized and married name, Gertrude Simmons Bonnin. She wrote several works chronicling her struggles with cultural identity, and the pull between the majority culture in which she was educated, and the Dakota culture into which she was born and raised. Her later books were among the first works to bring traditional Native American stories to a widespread white English-speaking readership.

Zofia Nałkowska was a Polish prose writer, dramatist, and prolific essayist. She served as the executive member of the prestigious Polish Academy of Literature (1933–1939) during the interwar period.

Zona Gale, also known by her married name, Zona Gale Breese, was an American novelist, short story writer, and playwright. She became the first woman to win the Pulitzer Prize for Drama in 1921. The close relationship she had with her parents set the tone for her writing and her personal life. Her books based upon her home town were found to be charming and had an intimate sense of realism, in which she captures the underlying feelings and motivations of her characters. All of her works were written under her maiden name, Zona Gale.

Zora Neale Hurston was an American author, anthropologist, and filmmaker. She portrayed racial struggles in the early-1900s American South and published research on hoodoo. The most popular of her four novels is Their Eyes Were Watching God, published in 1937. She also wrote more than 50 short stories, plays, and essays.